The Atomic Theory

Front

Who was the first person to ever talk about the atom?

Back

Democritus

Front

All matter is made of what? Options: energy, electrons, atoms, compounds

Back

atoms

Front

How did Rutherford discover the proton?

Back

Gold Foil Experiment

Front

Who stated that all atoms of the same element are exactly alike?

Back

Dalton

Front

What scientist is best known for his "Plum Pudding" model of the atom? Options: J. J. Thomson, Ernest Rutherford, John Dalton, Democritus

Back

J. J. Thomson

Front

What contribution did John Dalton make to the atomic theory?

Back

He discovered that every element consisted of one type of atom.

Front

Rutherford's gold foil experiment provided evidence that...

Back

there is a dense positively charged nucleus at the center of an atom.

Front

True or False: The majority of an atom is made up of empty space

Back

True

Front

The middle of the atom, which contains protons and neutrons, is called ___________

Back

the nucleus

Front

Bohr's model of the atom proposed that ______.

Back

electrons move around the nucleus in levels